Tilting device for sliding windows



April 25, 1933. w. VON FISCHER 1,906,026

TILTING DEVICE FOR SLIDING WINDOWS Filed Dec. 3, 1951 5 Sheets-Sheet 1 Fig. 1 A

' l/V VE N TO 5 y 1444: 05/74 m/v Use/lg ,4 TTOEA/EKS April 25, 1933. w. VON FISCHER TILTING DEVICE FOR SLIDING WINDOWS Filed Dec. 5, 1931 3 Sheets-Sheet 2 an a , rroE/VEKS April 25, 1933.

W. VON FISCHER TILIING DEVICE FOR SLIDING WINDOWS Filed Dec. 3, 1931 3 Sheets-Sheet 3 L V 17 U-34-U Patented Apr. 25, 1933 UNITED STATES PATENT OFFICE WALDEMAB v0! FISCHER, OI HAMBURG, GERMAN Y, ASSIGNOB TO FA. RICHARD 3m,

- OI HAMBURG, GERMANY TILTING DEVICE FOR SLIDING WINDOWS Application filed December 3, 1931, Serial No. 578,858, and in Germany February 20, 1930.

The present invention relates to a folding device for sliding windows rotatable about the lower horizontal axis and has for its object to obtain great security of the windows when folding. In the previously known folding devices for sliding windows rotatable about their lower horizontal axis there was the disadvantage that the window, if folded carelessly, moved upwardly at its lower end in the guide by reason of the pull of the sash weight.

This disadvantage is eliminated in accordance with the present invention in that there is provided a safety device which prevents the upward movement of the lower end of the sash, this device being adapted to be actuated positively before folding the window sash as it is impossible to fold the window sash without actuating the safety device. In contrast with the previously known safety devices there is the fundamental difference that there is not provided a safety device which must be actuated by folding the window sash or of which the operation may be forgotten, but a safety device is provided which is so arranged that unless it is first operated it is impossible to fold the window sash.

The result aimed at is obtainable'in two ways. Either the actuating device for looking may be so disposed in the folding plane of the window sash that it is only possible after removing this actuating device, that is to say after actuating the locking device, to expose the path for the sash, or when sepa* rate securing devices are provided these are positively connected to the locking device in such a manner that the securing devices can only be actuated by the locking device, or vice versa, that is to say expose the path for the folding of the sash, as soon as the sliding pivots of the sash have been locked and vice versa close the path for folding the sash until the sliding pivots have been unlocked. The second method, namely positive connection between the locking device and the securing device has the further advantage that in the case of high and wide windows the very difiicult operation of the locking device may be omitted. In the accompanying drawings are illustrated a number of forms of construction of the invention.

Figure 1 shows a complete view of a slidinghwindow with a sliding top and bottom sas Figure 2 shows a cross section on the line AB of Figure 1 with a securing device.

Figure 3 shows a cross section on the line AB of Figure 1 with an upstanding lever as securing device.

Figure 4 shows a cross section on the line AB of Figure 1 with a positive connection of the securing device with the catch device.

Figure 5 shows another form of construction of the securing device.

Figure 6 shows a second form of construction of the connection of the securing device and the catch device.

Figure 7 shows a further form of construction of the form of connection of the safety device and the catch device.

Figure 8 shows a complete section on the line A-B of Figure 1.

Figure 9 shows a section of Figure 8 with the folded lower sash.

Figure 10 shows the same section with the folded upper sash.

Figures 11 to 13 show a securing device for the folding device against unauthorized operation, and

Figures 14 to 17 show a further form of construction between the locking device and the catch device.

In the complete view of the sash window (Figure 1) 1 is the lower sash, 2 the upper sash, 3 are catches which hold the window in the closed position, 4 are catch devices which prevent the window sash from tilting forwardly in the position of rest and in the raised position enable the sash to be tilted. 5 indicates levers which in accordance with the present invention stop the wire cable pivot for tilting the sash.

It is to be particularly pointed out that all the forms of construction described in the specification and illustrated in the drawings are for the purpose of simplicity illustrated as windows in which spring pendula are used as catch devices and in which the locking devices are actuated by folding levers. It 100 will be understood that in spite of this the subject of the invention can be directlfi applied to windows in which other catc devices, such as for example spring pins or the like, are used or in which the actuation of the locking device is efiected by keys or the like.

In the form of construction according to Figure 2 the lever 5 can be rocked about a pin 7 provided in the casement plate 6. On the second lever arm of the lever 5 1s ed a cam pin 9 movable in the cam s 0t 8 of the casement plate 6 and having a rod 10 attached thereto. In the position of rest of the lever 5 the rod 10, extends in front of the opening 11 in the easement plate 6 WhlCh serves for the reception of the wlre cable pin 12 of the sash 1. In the folded position of the lever 5 the rod 10, as shown in broken lines, closes the opening 10 and retains the wire cable pivot 12 in the opening 11 so that it cannot enter the guide grove 13. The folded lever 5 serves simultaneously as support for the tilted window sash. The pendulum in the present case is not formed as a spring actuated lever, but as a bar 19 which can be tilted and which in the tilted position is held by a stop lever or the like and after releasing the stop device snaps back into its osition of rest under spring action. The ever 5 engages by means of a projection 14.- over the sprin actuated pendulum 4, so that this can only tilted when the lever 5 is folded.

In the form of construction according to Figure 3 the lever 5 itself forms the catch device as it extends u wardly as far as the guide bar 31 on which t e lower sash is guided when moved upwardly. The lever 5 in this case performs the function of the bar 19 in Fi re 2 or of the spring actuated pendulum in igure 1. Otherwise the method of looking is the same as in Figure 2.

n the form of construction according to Figure 4 the securing device is the same as in Figure 2. In this case, however, there engages with the cam pin 9, in addition to the rod 10, a further rod 17 which with its other end engages with a cam pin 18 of the spring actuated pendulum 4. The cam pin 18 is 'ded in a cam slot 20 and during its movement in the slot 20 swings the pendulum 4 about its pivot 21 into the position shown in chain dotted lines.

In the form of construction according to Figure 5 the rod 10 is formed as a rack and the movement of the lever 5 is transmitted by toothed wheels 15, 16 to the rod in such a manner that when folding the lever it moves from right to left and closes the opening 11 in the easement plate 6.

In the form of construction according to Fi ure 6 the securing device is the same as in igure 5. The rod 17 which connects the lever 5 to the pendulum is here formed as a rovid- 1 rack and during its movement acts on a toothed wheel 22, provided on the pivot of the dulum 4, whereby the spring actuated n ulum is swung outwardly.

In the construction according to Figure 7, in contrast with the construction shown in Figure 4, the rod 17 does not enga e with a cam pin of the ndulum, but wit 23 rovided on t e pivot 21 of the pendulum an thus effects the swinging of the pendu- It will be understood that when connecting the securing device to the pendulum other combinations of the transmission mechanism can be used apart from those illustrated. The transmission devices to be used in separate cases depend upon the conditions of size, weight and rice.

In addition to the transmission devices illustrated it is possible also to use other known transmission devices.

Fi 8 shows a complete section on the line -B of Figure 1, whilst omitting all parts which are not visible. The se rate parts have the same references as in igure 1. In Figure 9 the window is shown in the same section with the lower sash tilted and in Figure 10 the lower sash has been raised and the upper sash is also in the raised position. 7

In Figures 11 to 13 is illustrated a form of construction in which before tilting the window sash it is first necessary torelease a stop device in order to enable the levers to be actuated. This prevents unintentional actuation of the levers through any carelessness, whereby the window sash could be caused to tilt automatically.

In Figures 11 to 13, 6 indicates the casement plate with the folding lever 5 rotatably secured thereto. 10 is the locking device for the guide pin 12 relatively to the guide groove 11. The engagement and disengagement of the catch 10 1s effected in the same manner as in the form of construction in Figure 7. 0n the catch is 'rovided a stop 24 which engages in a stop ole 25 of the casement plate 6 when the lever is in a vertical position. The stop device, as shown in Figure 13, consists of the stop pin 26, the iral spring 27 and the guide bush 28 which 1s secured to the catch 10. The stop pin is provided with a conical recess 29 at its end projecting from the easement plate in order to permit of a more convenient pressing back of the stop pin by means of a pointed object.

The stop device may also be provided on the catch 10 in the form of construction shown in Figure 6. It may be also provided on any other part which is dependent on the movement of the lever 5, as for example on the lever 23 of the pendulum 4. or on this itself or also on the levers 5. It will be understood that the stop device may in each case be arranged separately irrespective as to a lever whether the folding device is connected to the pendulum or not.

In the forms of construction previously described the levers 5, which before tilting the window sash must be operated and in this case simultaneously effect the engagement and disengagement of the locking devices for the guide pivots, serve simultaneously after actu'ation as a support for the tilted window sash.

According to Figures 14 to 17 these levers are omitted. For this reasonthe possibility of folding the window sash is made dependent on the actuation of the spring actuated lever of the catch device, whereby the engagement and disengagement of the stopping device for the guide pivots is effected simul taneously when actuating the pendulum. In this case separate supporting levers are provided for supporting the tilted window sash which are arranged in a detachable manner and in the applied position may serve simultaneously as a stop for the engaged catch, so that this cannot be disengaged automatically. In this manner there is obtained the advantage that for a series of sliding windows only one or a pair of supporting levers is necessary in order to support the window sashes after tilting for the purpose of conveniently cleaning them, whilst on each Window there must be provided at least one lever in order to obtain the same result.

A further improvement resides therein that the catch devices for the guide pins are guided in such a manner that when placed into position they press the guide pins of the window sash downwardly in the guide grooves whereby a secure hold for the window sashes is obtained in the guide grooves during tilting.

In Figures 14 to 17 the easement plate 6 is provided with two holes 32 which in the engaged position of the catch 10 according to Figure 12 coincide with two similar holes 33 in the catch. Into these holes are fitted pins 34 of the supporting lever 35. In the catch 10 is also provided a cam slot 36 which is guided on a pin 37 on the easement plate 6 in such a manner that the-tongue 30 of the catch 10 when engaging the catch engages with the pin 12 from the top and presses this into the groove 11. It will be understood that the cam slot may be provided in the easement plate and the guide pin on the catch. This arrangement, as will be readily understood, may also be applied to the other forms of construction above described. It will also be understood that the stop device in Figures 11 to 13 may also be used in the present case.

claim 1. A tilting device, comprising a tiltable window sash, a lever, means pivotally supporting said lever, a cam pin carried by one end of said lever, a rod attached to said cam pin, and a wire cable pivot carried by said sash, said rod being adapted to lock said wire cable pivot in the folded position of said lever.

2. A tilting device, window sash, a lever, porting said lever,

comprising a tiltable means pivotally supa cam pin carried by one end of said lever, a rod attached to said cam pin, a wire cable pivot carried by said sash, and a catch device operatively connected with said lever, said catch device being released when said' lever is being actuated.

3. A tilting device, comprising a tiltable window sash, a lever having an upstanding end normally extending into the tilting plane of said window sash, said lever being adapted to serve as a support for the tilted window sash, means pivotally supporting said lever, a cam pin carried by one end of said lever, a rod attached to said cam pin, and a wire cable pivot carried by said sash, said lever releasing said window sash for tilting after saiid wire cable pivot has been locked by said r0 4. A tilting device, window sash, a lever, porting said lever, a cam pin carried y one end of said lever, a rod attached to said cam pin, a wire cable pivot carried by said sash, means for preventing an accidental actuation of said lever, the last-mentioned means comprising a bushing connected with said rod, 2. pin slidably mounted in said bushing, a spring situated in said bushing and normally pressing said slidable pin outwards, and a member situated close to said slidable pin and having a hole adapted to engage with said pin.

5. A tilting device comprising a tiltable window sash, means cooperating with said window sash for locking the same, and a comprising a tiltable means pivotall suptiltable catch device positively connectedwith said locking means, the tilting of said catch device effecting the locking of said window sash. I

6. A tilting device comprising a casement plate, a catch, holes formed in said catch and said casement plate, said holes being adapted to register in the locking position of said catch, and movable pins adapted to penetrate into said holes.

7. A tilting device comprising a casement plate, a catch, holes formed in said catch and said casement plate, said holes being adapted to register in the locking position of said catch, a cam slot formed in said catch, a pin for engagement with said cam slot, a tongue forming a part of said catch, and movable pins adapted to penetrate into said holes.

8. A tilting device comprising a casement plate, a catch, holes formed in said catch and said casement plate, said holes being adapted to register in the locking position of said catch, a supporting lever, pins carried by said lever and fitting into said holes, a tiltable window sash, a cable pivot carried by said sash, a cam slot formed in said catch, a gin for engagement with said cam slot, an a tongue forming a part of said catch and adapted to lock said cable ivots. 5 In testimony whereof, I have aflixed my signature.

WALDEMAR VON FISCHER. 

